三种高钢级大直径焊管残余应力分布规律研究.docx

三种高钢级大直径焊管残余应力分布规律研究熊庆人1 ，2 ，李霄1 ，3 ，霍春 三种高钢级大直径焊管 残余应力分布规律研究 熊庆人1 ，2 ，李 霄1 ，3 ，霍春勇2 ，石 凯3 ，胥聪敏3 ，王长安2 ( 1． 西安交通大学，西安 710049; 2． 中国石油集团石油管工程技术研究院，西安 710065; 3． 西安石油大学，西安 710065) 摘 要: 采用盲孔法较为系统地对 UOE，JCOE 和 SAWH 三种管型的高钢级大直径焊管的残 余应力进行了测试，获得了三种管型焊管残余应力分布规 律。UOE 焊管的残余应力水平较 低，分布较均匀，平均周向应力水平为 28 MPa，峰值周向拉应力为 104 MPa，在焊缝内壁出现; JCOE 焊管的残余应力水平略高于 UOE 焊管，分布均匀性较 UOE 焊管差，平均周向拉应力为 73 MPa，峰值周向拉应力为 183 MPa，出现在焊缝外壁; SAWH 焊管的峰值应力高于直缝焊管， 其峰值周向应力为 407 MPa，在焊缝内壁出现。 关键词: UOE; JCOE; SAWH; 残余应力; 盲孔法 中图分类号: TG404 文献标志码: A 文章编号: 1001 － 3938( 2011) 03 － 0012 － 06 Research on Residual Stress Distribution Rule of 3 Kinds of Large Diameter Welded Pipe with High Grade XIONG Qing-ren1，2 ，LI Xiao1，3 ，HUO Chun-yong2 ，SHI Kai3 ，XU Cong-min3 ，WANG Chang-an2 ( 1． Xi’an Jiaotong University，Xi’an 710049，China; 2． CNPC Tubular Goods Research Institute，Xi’an 710065，China; 3． Xi’an Shiyou University，Xi’an 710065，China) Abstract: The residual stress of 3 kinds of large diameter welded pipe with high grade of UOE，JCOE and SAWH was tested by firstly adopting blind-hole method，and the residual stress distribution rule was received． The residual stress of UOE welded pipe is low，its distribution is uniform，the uniform circumferential stress is 28 MPa，the peak of cir- cumferential stress is 104 MPa，and appears in weld inside surface; the residual stress of JCOE welded pipe is higher than that of UOE welded pipe，distribution uniformity is lower than that of UOE welded pipe，the average circumfer- ential stress is 73 MPa，the peak of circumferential stress is 183 MPa，and appears in weld outside surface; the resid- ual stress peak of SAWH welded pipe is higher than that of longitudinal welded pipe，the peak of circumferential stress is 407 MPa，and appears in weld inside surface． Key words: UOE; JCOE; SAWH; residual stress; blind-hole method 的承载能力、变形能力、耐腐蚀性能、疲劳断裂等 产生重要影响。由于残余应力对管线运行安全有 重要影响，掌握焊管中残余应力的水平及分布状 况，进而分析残余应力产生原因及调控措施是非 常必要的，也是当前急需解决的工程实际问题。 焊管残余应力的测试主要采